Phosphorus-doped silicon nanocrystals exhibiting mid-infrared localized surface plasmon resonance

David J. Rowe, Jong Seok Jeong, K. Andre Mkhoyan, Uwe R. Kortshagen

Research output: Contribution to journalArticlepeer-review

153 Scopus citations


Localized surface plasmon resonances (LSPRs) enable tailoring of the optical response of nanomaterials through their free carrier concentration, morphology, and dielectric environment. Recent efforts to expand the spectral range of usable LSPR frequencies into the infrared successfully demonstrated LSPRs in doped semiconductor nanocrystals. Despite silicon's importance for electronic and photonic applications, no LSPRs have been reported for doped silicon nanocrystals. Here we demonstrate doped silicon nanocrystals synthesized via a nonthermal plasma technique that exhibits tunable LSPRs in the energy range of 0.07-0.3 eV or mid-infrared wavenumbers of 600-2500 cm-1.

Original languageEnglish (US)
Pages (from-to)1317-1322
Number of pages6
JournalNano letters
Issue number3
StatePublished - Mar 13 2013


  • Silicon nanocrystals
  • doping
  • localized surface plasmon resonance


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